Synthesis, spectroscopy and X-ray crystal structures of some zinc(II) and cadmium(II) complexes of the 2-pyridinecarboxaldehyde Schiff bases of S-methyl- and S-benzyldithiocarbazates
摘要:
The Schiff bases formed by condensation of S-methyl- and S-benzyldithiocarbazate with 2-pyridinecarboxaldehyde react with zinc(II) and cadmium(II) acetates to form stable metal complexes of general. formulas, [Zn(NNS)(CH3COO)](2) and [M(NNS)(2)] (M = Zn2+, Cd2+; NNS- = anionic forms of the 2-pyridine-carboxaldenhdye Schiff bases of S-methyl- and S-benzyldithiocarbazate, respectively) which have been characterized by a variety of physico-chemical techniques and X-ray crystallographic structure analysis. The complexes, [Zn(NNS)(CH3COO)](2) are acetate anion-bridged centrosymmetric dimers in which each of the Schiff bases is coordinated to the zinc(II) ions as a uninegatively charged NNS tridentate chelating agent coordinating via the pyridine nitrogen atom, the azomethine nitrogen atom and the thiolate sulfur atom. The acetate anion acts as a bridging bidentate ligand coordinating with the two zinc atoms in a syn-syn manner. Each zinc(II) ion in the dimer adopts an approximately square-pyramidal geometry. The bis-ligand complexes, [M(NNS)(2)] (M = Zn2+, Cd2+) have distorted octahedral structures in which the two anionic Schiff bases are coordinated to the metal ions meridionally as NNS tridentate chelating agents via the pyridine nitrogen atom, the azomethine nitrogen atom and the thiolate sulfur atom.Both the mono- and bis-ligand zinc(II) complexes exhibit strong cytotoxic activity against the HELA (human cervical cancer) cell lines. Some of these compounds exhibit stronger cytotoxicity against HELA than the commercially important anticancer drug, Tamoxifen. (c) 2014 Elsevier Ltd. All rights reserved.
Synthesis, spectroscopy and X-ray crystal structures of some zinc(II) and cadmium(II) complexes of the 2-pyridinecarboxaldehyde Schiff bases of S-methyl- and S-benzyldithiocarbazates
摘要:
The Schiff bases formed by condensation of S-methyl- and S-benzyldithiocarbazate with 2-pyridinecarboxaldehyde react with zinc(II) and cadmium(II) acetates to form stable metal complexes of general. formulas, [Zn(NNS)(CH3COO)](2) and [M(NNS)(2)] (M = Zn2+, Cd2+; NNS- = anionic forms of the 2-pyridine-carboxaldenhdye Schiff bases of S-methyl- and S-benzyldithiocarbazate, respectively) which have been characterized by a variety of physico-chemical techniques and X-ray crystallographic structure analysis. The complexes, [Zn(NNS)(CH3COO)](2) are acetate anion-bridged centrosymmetric dimers in which each of the Schiff bases is coordinated to the zinc(II) ions as a uninegatively charged NNS tridentate chelating agent coordinating via the pyridine nitrogen atom, the azomethine nitrogen atom and the thiolate sulfur atom. The acetate anion acts as a bridging bidentate ligand coordinating with the two zinc atoms in a syn-syn manner. Each zinc(II) ion in the dimer adopts an approximately square-pyramidal geometry. The bis-ligand complexes, [M(NNS)(2)] (M = Zn2+, Cd2+) have distorted octahedral structures in which the two anionic Schiff bases are coordinated to the metal ions meridionally as NNS tridentate chelating agents via the pyridine nitrogen atom, the azomethine nitrogen atom and the thiolate sulfur atom.Both the mono- and bis-ligand zinc(II) complexes exhibit strong cytotoxic activity against the HELA (human cervical cancer) cell lines. Some of these compounds exhibit stronger cytotoxicity against HELA than the commercially important anticancer drug, Tamoxifen. (c) 2014 Elsevier Ltd. All rights reserved.
2-Arylidene Hydrazinecarbodithioates as Potent, Selective Inhibitors of Cystathionine γ-Lyase (CSE)
作者:Abir Bhattacharjee、Antara Sinha、Kiira Ratia、Liang Yin、Loruhama Delgado-Rivera、Pavel A Petukhov、Gregory R. J. Thatcher、Duncan J. Wardrop
DOI:10.1021/acsmedchemlett.7b00313
日期:2017.12.14
Hydrogensulfide is produced from l-cysteine by the action of both cystathionine γ-lyase (CSE) and cystathionineβ-synthase (CBS) and increasingly has been found to play a profound regulatory role in a range of physiological processes. Mounting evidence suggests that upregulation of hydrogensulfide biosynthesis occurs in several disease states, including rheumatoid arthritis, hypertension, ischemic
[EN] TUMOUR TREATMENT AGENTS AND METHOD<br/>[FR] AGENTS THÉRAPEUTIQUES DE TUMEURS ET MÉTHODE ASSOCIÉE
申请人:VIVOLUX AB
公开号:WO2011075032A1
公开(公告)日:2011-06-23
N1-(3-Methoxypropyl)-2-(pyridylmethylidene)-hydrazine-1-carbothioamide (I) and its Cu2+, Pd2+ and Pt2+ complexes are effective anti-tumor agents. Also disclosed are compositions comprising (I) and its Cu2+, Pd2+ and Pt2+ complexes, and the use of the compositions in the treatment of malignant tumors.
N1-(3-Methoxypropyl)-2-(pyridylmethylidene)-hydrazine-1-carbothioamide (I) and its Cu
2+
, Pd
2+
and Pt
2+
complexes are effective anti-tumor agents. Also disclosed are compositions comprising (I) and its Cu
2+
, Pd
2+
and Pt
2+
complexes, and the use of the compositions in the treatment of malignant tumors.